Arizona Real Estate License Practice Exam 2025 - Free Real Estate Practice Questions and Study Guide

One acre-foot of water is a volume measurement that represents the amount of water required to cover one acre of land to a depth of one foot. It is commonly used in water resource management and is a significant figure in areas reliant on irrigation or water supply.

The correct figure for the volume of one acre-foot is 325,851 gallons. This value is derived from the fact that one acre is equal to 43,560 square feet, and when you multiply this area by a depth of one foot, you get the total cubic feet equivalent. Converting cubic feet into gallons (1 cubic foot equals approximately 7.48 gallons) leads to the calculation that 43,560 cubic feet multiplied by 7.48 gallons per cubic foot equals approximately 325,851 gallons.

The other options presented are larger quantities, indicating a misunderstanding of the volume measurement specific to an acre-foot. Each of those figures represents a different volume entirely, either by miscalculation or including additional dimensional factors that do not apply to the definition of one acre-foot. Thus, 325,851 gallons is the accepted and correct quantity for one acre-foot of water.